September Weather in Sili, Italy

Last updated: August 23, 2025

In September, the average temperature in Sili, Italy hovers around 23°C (73°F), with a comfortable range between a minimum of 14°C (57°F) and a pleasant maximum of 31°C (88°F). Expect about 47 mm (1.9 in) of precipitation spread across 4 days, contributing to an average humidity level of 75%. Whether you're planning outdoor activities or exploring the local culture, this weather is perfect for a variety of experiences!

September Temperature in Sili

In September in Sili, the average temperature is 23°C (73°F), with maximums reaching 31°C (88°F) and minimums dipping as low as 14°C (57°F). This pleasant climate makes Sili an ideal destination for travelers seeking comfortable weather.

September Weather in Sili: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sili, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sili, September typically has an average temperature of 23°C (73°F), with highs reaching up to 31°C (88°F) and lows dropping to around 14°C (57°F).

Data source: Temperature data for Sili generated using information from the Copernicus Climate Change Service.

September Precipitation in Sili

In Sili in September, the precipitation amount is 47 mm (1.9 in) over the course of 4 days.

September Precipitation Trends in Sili

The chart displays monthly precipitation patterns in Sili, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Sili, September typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 4 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Sili

In Sili in September, humidity is 75%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making travel slightly uncomfortable yet invigorating as the air wraps around you, creating a sense of walking through a lush, tropical paradise.

September Average Humidity in Sili

This chart illustrates the average monthly humidity levels in Sili, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Sili is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sili

In Sili in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Sili.

Maximum UV Index Levels in Sili for September

The chart shows the monthly maximum UV Index (UVI) for Sili in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Sili typically reaches 8, which falls under the very high exposure category.

Data source: Sili September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Sili Compares to Other Months

Weather in Sili varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sili, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sili, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (51°F)	65 mm (2.6 inches)	76%	moderate
February Weather	11°C (53°F)	62 mm (2.5 inches)	73%	moderate
March Weather	12°C (54°F)	59 mm (2.3 inches)	73%	high
April Weather	15°C (59°F)	49 mm (1.9 inches)	77%	very high
May Weather	18°C (64°F)	60 mm (2.4 inches)	78%	very high
June Weather	22°C (72°F)	19 mm (0.7 inches)	77%	very high
July Weather	25°C (77°F)	5 mm (0.2 inches)	77%	very high
August Weather	26°C (79°F)	12 mm (0.5 inches)	74%	very high
September Weather	23°C (73°F)	47 mm (1.9 inches)	75%	very high
October Weather	19°C (66°F)	49 mm (1.9 inches)	76%	high
November Weather	15°C (59°F)	163 mm (6.4 inches)	75%	moderate
December Weather	12°C (54°F)	124 mm (4.9 inches)	74%	low